The Marvair CommStat 3™ is factory programmed with industry standard set points to facilitate installation. If desired, each of the set points can be quickly and easily changed in the field by the installer. The lead/lag controller insures equal run time on each air conditioner and allows the lag unit to assist upon demand. The CommStat 3™ controller can be used with Marvair's ComPac® I and ComPac® II air conditioners or environmental control units. The CommStat 3™ is housed in an aqua blue, corrosion resistant, polycarbonate enclosure.
Features:
Thermostat Range:
Cooling: 72° - 95°F (22° - 35°C)
Heating: 50° - 80°F (10° - 27°C)
Programmable in °F or °C
Two stages of heating and two stages of cooling
Easy to change set points
Push button to change lead and lag unit
LED's indicate
Control power
Function (heating or cooling)
Lead unit
High or low refrigerant pressure lockout
Digital display of temperature
Comfort button temporarily overrides set points for 90 minutes
If one A/C loses power, the other A/C automatically advances to the lead position
Indefinite program retention if power is lost
Adjustable on-off differential of each stage
Adjustable interstage differential
Insensitive to phasing of units
24 VAC
No additional power source required
Built-in temperature sensor with up to three optional remote sensors
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